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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






2. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






3. FEED






4. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






5. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






6. Scar tissue plugs up chambers of udder






7. 30-38 hours after estrus cycle begins






8. Milk ~305 days - dry 60 days prior to calving






9. When are steers and heifers weaned from bottle feeding?






10. 24 hours before end of estrus cycle






11. Not under a timeline - cow can not be sold as steak






12. 10-37 (21) days






13. Actual heat cycle (period)






14. Milk ~305 days - dry 60 days prior to calving






15. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






16. Parturition is controlled by...






17. 147 days






18. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






19. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






20. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






21. Larger the cow - more milk is produced; smaller the cow - less milk is produced






22. Failure to have one testis (gonad) to descend






23. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






24. Parturition is controlled by...






25. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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26. 19-23 (21) days






27. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






28. Check feet and legs - look for masculine traits in build such as crest and muscling






29. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






30. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






31. Way to know everything is alright with the breeding male






32. Animal which has been castrated after puberty






33. Animals which have many estrous periods per year (ex: cow - sow)






34. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






35. 19-23 (21) days






36. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






37. Duct through penis that carries sperm and urine






38. Why Dairy calves are fed powdered milk.






39. 16-20 hours






40. (LH) causes female's egg to break (her period)






41. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






42. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






43. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






44. Provide nourishment for the developing sperm






45. 14-19 (17) days






46. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






47. Microscopic - make sure not sterile - very few bulls are actually tested






48. Allows extension of penis without fibro-elastic penis






49. Look for infection - split - and rupture of the penis






50. Depository for semen during insemination. where urine leaves the body